Increased sleep tendency in jaundiced infants: Role of endogenous co

Heme-carbonyl complexes are widely exploited for the insight they provide into the structural basis of function in heme-based proteins, by revealing the nature of their bonded and nonbonded interactions with the protein. This report presents two novel results which clearly establish a FeCO vibrational signature for crystallographically verified pentacoordination. First, anisotropy in the NRVS density of states for νFe–C and δFeCO in oriented single crystals of [Fe(OEP)(CO)] clearly reveals that the Fe–C stretch occurs at higher frequency than the FeCO bend and considerably higher than any previously reported heme carbonyl. Second, DFT calculations on a series of heme carbonyls reveal that the frequency crossover occurs near the weak trans O atom donor, furan. As νFe–C occurs at lower frequencies than δFeCO in all heme protein carbonyls reported to date, the results reported herein suggest that they are all hexacoordinate.

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The Diagnostic Vibrational Signature of Pentacoordination in Heme Carbonyls

Linder

Silvernail

Barabanschikov

et al. 2014

J. Am. Chem. Soc.

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Effect of unconjugated hyperbilirubinemia on neonatal autonomic functions: evaluation by heart rate variability

Özdemir

Olukman

Karadeniz

et al. 2017

The Journal of Maternal-Fetal & Neonatal Medicine

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Increased sleep tendency in jaundiced infants: Role of endogenous co

Cited by 2 publications

References 6 publications

The Diagnostic Vibrational Signature of Pentacoordination in Heme Carbonyls

The Diagnostic Vibrational Signature of Pentacoordination in Heme Carbonyls

Effect of unconjugated hyperbilirubinemia on neonatal autonomic functions: evaluation by heart rate variability

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